*
*
* SSH2 support added by Markus Friedl.
- * Copyright (c) 1999,2000 Markus Friedl. All rights reserved.
+ * Copyright (c) 1999, 2000, 2001 Markus Friedl. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
*/
#include "includes.h"
-RCSID("$OpenBSD: clientloop.c,v 1.73 2001/05/30 12:55:10 markus Exp $");
+RCSID("$OpenBSD: clientloop.c,v 1.118 2004/05/08 00:01:37 deraadt Exp $");
#include "ssh.h"
#include "ssh1.h"
#include "packet.h"
#include "buffer.h"
#include "compat.h"
-#include "channel.h"
+#include "channels.h"
#include "dispatch.h"
#include "buffer.h"
#include "bufaux.h"
#include "clientloop.h"
#include "authfd.h"
#include "atomicio.h"
-#include "sshtty.h"
+#include "sshpty.h"
#include "misc.h"
+#include "readpass.h"
/* import options */
extern Options options;
/* Flag indicating that stdin should be redirected from /dev/null. */
extern int stdin_null_flag;
+/* Flag indicating that no shell has been requested */
+extern int no_shell_flag;
+
/*
* Name of the host we are connecting to. This is the name given on the
* command line, or the HostName specified for the user-supplied name in a
* window size to be sent to the server a little later. This is volatile
* because this is updated in a signal handler.
*/
-static volatile int received_window_change_signal = 0;
+static volatile sig_atomic_t received_window_change_signal = 0;
+static volatile sig_atomic_t received_signal = 0;
/* Flag indicating whether the user\'s terminal is in non-blocking mode. */
static int in_non_blocking_mode = 0;
static int connection_out; /* Connection to server (output). */
static int need_rekeying; /* Set to non-zero if rekeying is requested. */
static int session_closed = 0; /* In SSH2: login session closed. */
+static int server_alive_timeouts = 0;
-void client_init_dispatch(void);
+static void client_init_dispatch(void);
int session_ident = -1;
/*XXX*/
/* Restores stdin to blocking mode. */
-void
+static void
leave_non_blocking(void)
{
if (in_non_blocking_mode) {
(void) fcntl(fileno(stdin), F_SETFL, 0);
in_non_blocking_mode = 0;
- fatal_remove_cleanup((void (*) (void *)) leave_non_blocking, NULL);
}
}
/* Puts stdin terminal in non-blocking mode. */
-void
+static void
enter_non_blocking(void)
{
in_non_blocking_mode = 1;
(void) fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
- fatal_add_cleanup((void (*) (void *)) leave_non_blocking, NULL);
}
/*
* flag indicating that the window has changed.
*/
-void
+static void
window_change_handler(int sig)
{
received_window_change_signal = 1;
* signals must be trapped to restore terminal modes.
*/
-void
+static void
signal_handler(int sig)
{
- if (in_raw_mode())
- leave_raw_mode();
- if (in_non_blocking_mode)
- leave_non_blocking();
- channel_stop_listening();
- packet_close();
- fatal("Killed by signal %d.", sig);
+ received_signal = sig;
+ quit_pending = 1;
}
/*
* available resolution.
*/
-double
+static double
get_current_time(void)
{
struct timeval tv;
* not appear to wake up when redirecting from /dev/null.
*/
-void
+static void
client_check_initial_eof_on_stdin(void)
{
int len;
* connection.
*/
-void
+static void
client_make_packets_from_stdin_data(void)
{
u_int len;
/* Send buffered stdin data to the server. */
while (buffer_len(&stdin_buffer) > 0 &&
- packet_not_very_much_data_to_write()) {
+ packet_not_very_much_data_to_write()) {
len = buffer_len(&stdin_buffer);
/* Keep the packets at reasonable size. */
if (len > packet_get_maxsize())
* appropriate.
*/
-void
+static void
client_check_window_change(void)
{
struct winsize ws;
}
}
+static void
+client_global_request_reply(int type, u_int32_t seq, void *ctxt)
+{
+ server_alive_timeouts = 0;
+ client_global_request_reply_fwd(type, seq, ctxt);
+}
+
+static void
+server_alive_check(void)
+{
+ if (++server_alive_timeouts > options.server_alive_count_max)
+ packet_disconnect("Timeout, server not responding.");
+ packet_start(SSH2_MSG_GLOBAL_REQUEST);
+ packet_put_cstring("keepalive@openssh.com");
+ packet_put_char(1); /* boolean: want reply */
+ packet_send();
+}
+
/*
* Waits until the client can do something (some data becomes available on
* one of the file descriptors).
*/
-void
+static void
client_wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp,
- int *maxfdp, int rekeying)
+ int *maxfdp, int *nallocp, int rekeying)
{
+ struct timeval tv, *tvp;
+ int ret;
+
/* Add any selections by the channel mechanism. */
- channel_prepare_select(readsetp, writesetp, maxfdp, rekeying);
+ channel_prepare_select(readsetp, writesetp, maxfdp, nallocp, rekeying);
if (!compat20) {
/* Read from the connection, unless our buffers are full. */
FD_SET(fileno(stderr), *writesetp);
} else {
/* channel_prepare_select could have closed the last channel */
- if (session_closed && !channel_still_open()) {
- if (!packet_have_data_to_write())
- return;
+ if (session_closed && !channel_still_open() &&
+ !packet_have_data_to_write()) {
+ /* clear mask since we did not call select() */
+ memset(*readsetp, 0, *nallocp);
+ memset(*writesetp, 0, *nallocp);
+ return;
} else {
FD_SET(connection_in, *readsetp);
}
/*
* Wait for something to happen. This will suspend the process until
* some selected descriptor can be read, written, or has some other
- * event pending. Note: if you want to implement SSH_MSG_IGNORE
- * messages to fool traffic analysis, this might be the place to do
- * it: just have a random timeout for the select, and send a random
- * SSH_MSG_IGNORE packet when the timeout expires.
+ * event pending.
*/
- if (select((*maxfdp)+1, *readsetp, *writesetp, NULL, NULL) < 0) {
+ if (options.server_alive_interval == 0 || !compat20)
+ tvp = NULL;
+ else {
+ tv.tv_sec = options.server_alive_interval;
+ tv.tv_usec = 0;
+ tvp = &tv;
+ }
+ ret = select((*maxfdp)+1, *readsetp, *writesetp, NULL, tvp);
+ if (ret < 0) {
char buf[100];
/*
* We have to return, because the mainloop checks for the flags
* set by the signal handlers.
*/
- memset(*readsetp, 0, *maxfdp);
- memset(*writesetp, 0, *maxfdp);
+ memset(*readsetp, 0, *nallocp);
+ memset(*writesetp, 0, *nallocp);
if (errno == EINTR)
return;
snprintf(buf, sizeof buf, "select: %s\r\n", strerror(errno));
buffer_append(&stderr_buffer, buf, strlen(buf));
quit_pending = 1;
- }
+ } else if (ret == 0)
+ server_alive_check();
}
-void
+static void
client_suspend_self(Buffer *bin, Buffer *bout, Buffer *berr)
{
struct winsize oldws, newws;
/* Flush stdout and stderr buffers. */
if (buffer_len(bout) > 0)
- atomicio(write, fileno(stdout), buffer_ptr(bout), buffer_len(bout));
+ atomicio(vwrite, fileno(stdout), buffer_ptr(bout), buffer_len(bout));
if (buffer_len(berr) > 0)
- atomicio(write, fileno(stderr), buffer_ptr(berr), buffer_len(berr));
+ atomicio(vwrite, fileno(stderr), buffer_ptr(berr), buffer_len(berr));
leave_raw_mode();
/* Check if the window size has changed. */
if (ioctl(fileno(stdin), TIOCGWINSZ, &newws) >= 0 &&
(oldws.ws_row != newws.ws_row ||
- oldws.ws_col != newws.ws_col ||
- oldws.ws_xpixel != newws.ws_xpixel ||
- oldws.ws_ypixel != newws.ws_ypixel))
+ oldws.ws_col != newws.ws_col ||
+ oldws.ws_xpixel != newws.ws_xpixel ||
+ oldws.ws_ypixel != newws.ws_ypixel))
received_window_change_signal = 1;
/* OK, we have been continued by the user. Reinitialize buffers. */
enter_raw_mode();
}
-void
+static void
client_process_net_input(fd_set * readset)
{
int len;
}
}
+static void
+process_cmdline(void)
+{
+ void (*handler)(int);
+ char *s, *cmd;
+ u_short fwd_port, fwd_host_port;
+ char buf[1024], sfwd_port[6], sfwd_host_port[6];
+ int local = 0;
+
+ leave_raw_mode();
+ handler = signal(SIGINT, SIG_IGN);
+ cmd = s = read_passphrase("\r\nssh> ", RP_ECHO);
+ if (s == NULL)
+ goto out;
+ while (*s && isspace(*s))
+ s++;
+ if (*s == 0)
+ goto out;
+ if (strlen(s) < 2 || s[0] != '-' || !(s[1] == 'L' || s[1] == 'R')) {
+ logit("Invalid command.");
+ goto out;
+ }
+ if (s[1] == 'L')
+ local = 1;
+ if (!local && !compat20) {
+ logit("Not supported for SSH protocol version 1.");
+ goto out;
+ }
+ s += 2;
+ while (*s && isspace(*s))
+ s++;
+
+ if (sscanf(s, "%5[0-9]:%255[^:]:%5[0-9]",
+ sfwd_port, buf, sfwd_host_port) != 3 &&
+ sscanf(s, "%5[0-9]/%255[^/]/%5[0-9]",
+ sfwd_port, buf, sfwd_host_port) != 3) {
+ logit("Bad forwarding specification.");
+ goto out;
+ }
+ if ((fwd_port = a2port(sfwd_port)) == 0 ||
+ (fwd_host_port = a2port(sfwd_host_port)) == 0) {
+ logit("Bad forwarding port(s).");
+ goto out;
+ }
+ if (local) {
+ if (channel_setup_local_fwd_listener(fwd_port, buf,
+ fwd_host_port, options.gateway_ports) < 0) {
+ logit("Port forwarding failed.");
+ goto out;
+ }
+ } else
+ channel_request_remote_forwarding(fwd_port, buf,
+ fwd_host_port);
+ logit("Forwarding port.");
+out:
+ signal(SIGINT, handler);
+ enter_raw_mode();
+ if (cmd)
+ xfree(cmd);
+}
+
/* process the characters one by one */
-int
+static int
process_escapes(Buffer *bin, Buffer *bout, Buffer *berr, char *buf, int len)
{
char string[1024];
/* We have been continued. */
continue;
+ case 'B':
+ if (compat20) {
+ snprintf(string, sizeof string,
+ "%cB\r\n", escape_char);
+ buffer_append(berr, string,
+ strlen(string));
+ channel_request_start(session_ident,
+ "break", 0);
+ packet_put_int(1000);
+ packet_send();
+ }
+ continue;
+
case 'R':
if (compat20) {
if (datafellows & SSH_BUG_NOREKEY)
- log("Server does not support re-keying");
+ logit("Server does not support re-keying");
else
need_rekeying = 1;
}
continue;
case '&':
- /* XXX does not work yet with proto 2 */
- if (compat20)
- continue;
/*
* Detach the program (continue to serve connections,
* but put in background and no more new connections).
*/
- if (!stdin_eof) {
- /*
- * Sending SSH_CMSG_EOF alone does not always appear
- * to be enough. So we try to send an EOF character
- * first.
- */
- packet_start(SSH_CMSG_STDIN_DATA);
- packet_put_string("\004", 1);
- packet_send();
- /* Close stdin. */
- stdin_eof = 1;
- if (buffer_len(bin) == 0) {
- packet_start(SSH_CMSG_EOF);
- packet_send();
- }
- }
/* Restore tty modes. */
leave_raw_mode();
/* Stop listening for new connections. */
channel_stop_listening();
- printf("%c& [backgrounded]\n", escape_char);
+ snprintf(string, sizeof string,
+ "%c& [backgrounded]\n", escape_char);
+ buffer_append(berr, string, strlen(string));
/* Fork into background. */
pid = fork();
exit(0);
}
/* The child continues serving connections. */
- continue; /*XXX ? */
+ if (compat20) {
+ buffer_append(bin, "\004", 1);
+ /* fake EOF on stdin */
+ return -1;
+ } else if (!stdin_eof) {
+ /*
+ * Sending SSH_CMSG_EOF alone does not always appear
+ * to be enough. So we try to send an EOF character
+ * first.
+ */
+ packet_start(SSH_CMSG_STDIN_DATA);
+ packet_put_string("\004", 1);
+ packet_send();
+ /* Close stdin. */
+ stdin_eof = 1;
+ if (buffer_len(bin) == 0) {
+ packet_start(SSH_CMSG_EOF);
+ packet_send();
+ }
+ }
+ continue;
case '?':
snprintf(string, sizeof string,
"%c?\r\n\
Supported escape sequences:\r\n\
-~. - terminate connection\r\n\
-~R - Request rekey (SSH protocol 2 only)\r\n\
-~^Z - suspend ssh\r\n\
-~# - list forwarded connections\r\n\
-~& - background ssh (when waiting for connections to terminate)\r\n\
-~? - this message\r\n\
-~~ - send the escape character by typing it twice\r\n\
+%c. - terminate connection\r\n\
+%cB - send a BREAK to the remote system\r\n\
+%cC - open a command line\r\n\
+%cR - Request rekey (SSH protocol 2 only)\r\n\
+%c^Z - suspend ssh\r\n\
+%c# - list forwarded connections\r\n\
+%c& - background ssh (when waiting for connections to terminate)\r\n\
+%c? - this message\r\n\
+%c%c - send the escape character by typing it twice\r\n\
(Note that escapes are only recognized immediately after newline.)\r\n",
- escape_char);
+ escape_char, escape_char, escape_char, escape_char,
+ escape_char, escape_char, escape_char, escape_char,
+ escape_char, escape_char, escape_char);
buffer_append(berr, string, strlen(string));
continue;
xfree(s);
continue;
+ case 'C':
+ process_cmdline();
+ continue;
+
default:
if (ch != escape_char) {
buffer_put_char(bin, escape_char);
return bytes;
}
-void
+static void
client_process_input(fd_set * readset)
{
int len;
}
}
-void
+static void
client_process_output(fd_set * writeset)
{
int len;
* preparatory phase.
*/
-void
+static void
client_process_buffered_input_packets(void)
{
dispatch_run(DISPATCH_NONBLOCK, &quit_pending, compat20 ? xxx_kex : NULL);
/* scan buf[] for '~' before sending data to the peer */
-int
+static int
simple_escape_filter(Channel *c, char *buf, int len)
{
/* XXX we assume c->extended is writeable */
return process_escapes(&c->input, &c->output, &c->extended, buf, len);
}
-void
+static void
client_channel_closed(int id, void *arg)
{
if (id != session_ident)
error("client_channel_closed: id %d != session_ident %d",
id, session_ident);
+ channel_cancel_cleanup(id);
session_closed = 1;
- if (in_raw_mode())
- leave_raw_mode();
+ leave_raw_mode();
}
/*
{
fd_set *readset = NULL, *writeset = NULL;
double start_time, total_time;
- int max_fd = 0, len, rekeying = 0;
+ int max_fd = 0, max_fd2 = 0, len, rekeying = 0, nalloc = 0;
char buf[100];
debug("Entering interactive session.");
client_init_dispatch();
- /* Set signal handlers to restore non-blocking mode. */
- signal(SIGINT, signal_handler);
- signal(SIGQUIT, signal_handler);
- signal(SIGTERM, signal_handler);
- signal(SIGPIPE, SIG_IGN);
+ /*
+ * Set signal handlers, (e.g. to restore non-blocking mode)
+ * but don't overwrite SIG_IGN, matches behaviour from rsh(1)
+ */
+ if (signal(SIGINT, SIG_IGN) != SIG_IGN)
+ signal(SIGINT, signal_handler);
+ if (signal(SIGQUIT, SIG_IGN) != SIG_IGN)
+ signal(SIGQUIT, signal_handler);
+ if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
+ signal(SIGTERM, signal_handler);
if (have_pty)
signal(SIGWINCH, window_change_handler);
* Wait until we have something to do (something becomes
* available on one of the descriptors).
*/
+ max_fd2 = max_fd;
client_wait_until_can_do_something(&readset, &writeset,
- &max_fd, rekeying);
+ &max_fd2, &nalloc, rekeying);
if (quit_pending)
break;
/* Do channel operations unless rekeying in progress. */
if (!rekeying) {
channel_after_select(readset, writeset);
-
- if (need_rekeying) {
- debug("user requests rekeying");
+ if (need_rekeying || packet_need_rekeying()) {
+ debug("need rekeying");
xxx_kex->done = 0;
kex_send_kexinit(xxx_kex);
need_rekeying = 0;
if (have_pty)
signal(SIGWINCH, SIG_DFL);
- /* Stop listening for connections. */
- channel_stop_listening();
+ channel_free_all();
- /*
- * In interactive mode (with pseudo tty) display a message indicating
- * that the connection has been closed.
- */
- if (have_pty && options.log_level != SYSLOG_LEVEL_QUIET) {
- snprintf(buf, sizeof buf, "Connection to %.64s closed.\r\n", host);
- buffer_append(&stderr_buffer, buf, strlen(buf));
- }
+ if (have_pty)
+ leave_raw_mode();
/* restore blocking io */
if (!isatty(fileno(stdin)))
if (!isatty(fileno(stderr)))
unset_nonblock(fileno(stderr));
+ /*
+ * If there was no shell or command requested, there will be no remote
+ * exit status to be returned. In that case, clear error code if the
+ * connection was deliberately terminated at this end.
+ */
+ if (no_shell_flag && received_signal == SIGTERM) {
+ received_signal = 0;
+ exit_status = 0;
+ }
+
+ if (received_signal)
+ fatal("Killed by signal %d.", (int) received_signal);
+
+ /*
+ * In interactive mode (with pseudo tty) display a message indicating
+ * that the connection has been closed.
+ */
+ if (have_pty && options.log_level != SYSLOG_LEVEL_QUIET) {
+ snprintf(buf, sizeof buf, "Connection to %.64s closed.\r\n", host);
+ buffer_append(&stderr_buffer, buf, strlen(buf));
+ }
+
/* Output any buffered data for stdout. */
while (buffer_len(&stdout_buffer) > 0) {
len = write(fileno(stdout), buffer_ptr(&stdout_buffer),
stderr_bytes += len;
}
- if (have_pty)
- leave_raw_mode();
-
/* Clear and free any buffers. */
memset(buf, 0, sizeof(buf));
buffer_free(&stdin_buffer);
/* Report bytes transferred, and transfer rates. */
total_time = get_current_time() - start_time;
debug("Transferred: stdin %lu, stdout %lu, stderr %lu bytes in %.1f seconds",
- stdin_bytes, stdout_bytes, stderr_bytes, total_time);
+ stdin_bytes, stdout_bytes, stderr_bytes, total_time);
if (total_time > 0)
debug("Bytes per second: stdin %.1f, stdout %.1f, stderr %.1f",
- stdin_bytes / total_time, stdout_bytes / total_time,
- stderr_bytes / total_time);
+ stdin_bytes / total_time, stdout_bytes / total_time,
+ stderr_bytes / total_time);
/* Return the exit status of the program. */
debug("Exit status %d", exit_status);
/*********/
-void
-client_input_stdout_data(int type, int plen, void *ctxt)
+static void
+client_input_stdout_data(int type, u_int32_t seq, void *ctxt)
{
u_int data_len;
char *data = packet_get_string(&data_len);
- packet_integrity_check(plen, 4 + data_len, type);
+ packet_check_eom();
buffer_append(&stdout_buffer, data, data_len);
memset(data, 0, data_len);
xfree(data);
}
-void
-client_input_stderr_data(int type, int plen, void *ctxt)
+static void
+client_input_stderr_data(int type, u_int32_t seq, void *ctxt)
{
u_int data_len;
char *data = packet_get_string(&data_len);
- packet_integrity_check(plen, 4 + data_len, type);
+ packet_check_eom();
buffer_append(&stderr_buffer, data, data_len);
memset(data, 0, data_len);
xfree(data);
}
-void
-client_input_exit_status(int type, int plen, void *ctxt)
+static void
+client_input_exit_status(int type, u_int32_t seq, void *ctxt)
{
- packet_integrity_check(plen, 4, type);
exit_status = packet_get_int();
+ packet_check_eom();
/* Acknowledge the exit. */
packet_start(SSH_CMSG_EXIT_CONFIRMATION);
packet_send();
/* Flag that we want to exit. */
quit_pending = 1;
}
+static void
+client_input_agent_open(int type, u_int32_t seq, void *ctxt)
+{
+ Channel *c = NULL;
+ int remote_id, sock;
+
+ /* Read the remote channel number from the message. */
+ remote_id = packet_get_int();
+ packet_check_eom();
+
+ /*
+ * Get a connection to the local authentication agent (this may again
+ * get forwarded).
+ */
+ sock = ssh_get_authentication_socket();
+
+ /*
+ * If we could not connect the agent, send an error message back to
+ * the server. This should never happen unless the agent dies,
+ * because authentication forwarding is only enabled if we have an
+ * agent.
+ */
+ if (sock >= 0) {
+ c = channel_new("", SSH_CHANNEL_OPEN, sock, sock,
+ -1, 0, 0, 0, "authentication agent connection", 1);
+ c->remote_id = remote_id;
+ c->force_drain = 1;
+ }
+ if (c == NULL) {
+ packet_start(SSH_MSG_CHANNEL_OPEN_FAILURE);
+ packet_put_int(remote_id);
+ } else {
+ /* Send a confirmation to the remote host. */
+ debug("Forwarding authentication connection.");
+ packet_start(SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
+ packet_put_int(remote_id);
+ packet_put_int(c->self);
+ }
+ packet_send();
+}
-Channel *
+static Channel *
client_request_forwarded_tcpip(const char *request_type, int rchan)
{
- Channel* c = NULL;
+ Channel *c = NULL;
char *listen_address, *originator_address;
int listen_port, originator_port;
int sock;
listen_port = packet_get_int();
originator_address = packet_get_string(NULL);
originator_port = packet_get_int();
- packet_done();
+ packet_check_eom();
debug("client_request_forwarded_tcpip: listen %s port %d, originator %s port %d",
listen_address, listen_port, originator_address, originator_port);
- sock = channel_connect_by_listen_adress(listen_port);
+ sock = channel_connect_by_listen_address(listen_port);
if (sock < 0) {
xfree(originator_address);
xfree(listen_address);
c = channel_new("forwarded-tcpip",
SSH_CHANNEL_CONNECTING, sock, sock, -1,
CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
- xstrdup(originator_address), 1);
- if (c == NULL) {
- error("client_request_forwarded_tcpip: channel_new failed");
- close(sock);
- }
+ originator_address, 1);
xfree(originator_address);
xfree(listen_address);
return c;
}
-Channel*
+static Channel *
client_request_x11(const char *request_type, int rchan)
{
Channel *c = NULL;
} else {
originator_port = packet_get_int();
}
- packet_done();
+ packet_check_eom();
/* XXX check permission */
debug("client_request_x11: request from %s %d", originator,
originator_port);
return NULL;
c = channel_new("x11",
SSH_CHANNEL_X11_OPEN, sock, sock, -1,
- CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0,
- xstrdup("x11"), 1);
- if (c == NULL) {
- error("client_request_x11: channel_new failed");
- close(sock);
- }
+ CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0, "x11", 1);
+ c->force_drain = 1;
return c;
}
-Channel*
+static Channel *
client_request_agent(const char *request_type, int rchan)
{
Channel *c = NULL;
c = channel_new("authentication agent connection",
SSH_CHANNEL_OPEN, sock, sock, -1,
CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
- xstrdup("authentication agent connection"), 1);
- if (c == NULL) {
- error("client_request_agent: channel_new failed");
- close(sock);
- }
+ "authentication agent connection", 1);
+ c->force_drain = 1;
return c;
}
/* XXXX move to generic input handler */
-void
-client_input_channel_open(int type, int plen, void *ctxt)
+static void
+client_input_channel_open(int type, u_int32_t seq, void *ctxt)
{
Channel *c = NULL;
char *ctype;
- u_int len;
int rchan;
- int rmaxpack;
- int rwindow;
+ u_int rmaxpack, rwindow, len;
ctype = packet_get_string(&len);
rchan = packet_get_int();
}
xfree(ctype);
}
-void
-client_input_channel_req(int type, int plen, void *ctxt)
+static void
+client_input_channel_req(int type, u_int32_t seq, void *ctxt)
{
Channel *c = NULL;
int id, reply, success = 0;
} else if (strcmp(rtype, "exit-status") == 0) {
success = 1;
exit_status = packet_get_int();
- packet_done();
+ packet_check_eom();
}
if (reply) {
packet_start(success ?
}
xfree(rtype);
}
+static void
+client_input_global_request(int type, u_int32_t seq, void *ctxt)
+{
+ char *rtype;
+ int want_reply;
+ int success = 0;
-void
+ rtype = packet_get_string(NULL);
+ want_reply = packet_get_char();
+ debug("client_input_global_request: rtype %s want_reply %d",
+ rtype, want_reply);
+ if (want_reply) {
+ packet_start(success ?
+ SSH2_MSG_REQUEST_SUCCESS : SSH2_MSG_REQUEST_FAILURE);
+ packet_send();
+ packet_write_wait();
+ }
+ xfree(rtype);
+}
+
+static void
client_init_dispatch_20(void)
{
dispatch_init(&dispatch_protocol_error);
+
dispatch_set(SSH2_MSG_CHANNEL_CLOSE, &channel_input_oclose);
dispatch_set(SSH2_MSG_CHANNEL_DATA, &channel_input_data);
dispatch_set(SSH2_MSG_CHANNEL_EOF, &channel_input_ieof);
dispatch_set(SSH2_MSG_CHANNEL_OPEN_FAILURE, &channel_input_open_failure);
dispatch_set(SSH2_MSG_CHANNEL_REQUEST, &client_input_channel_req);
dispatch_set(SSH2_MSG_CHANNEL_WINDOW_ADJUST, &channel_input_window_adjust);
+ dispatch_set(SSH2_MSG_GLOBAL_REQUEST, &client_input_global_request);
/* rekeying */
dispatch_set(SSH2_MSG_KEXINIT, &kex_input_kexinit);
+
+ /* global request reply messages */
+ dispatch_set(SSH2_MSG_REQUEST_FAILURE, &client_global_request_reply);
+ dispatch_set(SSH2_MSG_REQUEST_SUCCESS, &client_global_request_reply);
}
-void
+static void
client_init_dispatch_13(void)
{
dispatch_init(NULL);
dispatch_set(SSH_SMSG_STDOUT_DATA, &client_input_stdout_data);
dispatch_set(SSH_SMSG_AGENT_OPEN, options.forward_agent ?
- &auth_input_open_request : &deny_input_open);
+ &client_input_agent_open : &deny_input_open);
dispatch_set(SSH_SMSG_X11_OPEN, options.forward_x11 ?
&x11_input_open : &deny_input_open);
}
-void
+static void
client_init_dispatch_15(void)
{
client_init_dispatch_13();
dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_ieof);
dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, & channel_input_oclose);
}
-void
+static void
client_init_dispatch(void)
{
if (compat20)
else
client_init_dispatch_15();
}
+
+/* client specific fatal cleanup */
+void
+cleanup_exit(int i)
+{
+ leave_raw_mode();
+ leave_non_blocking();
+ _exit(i);
+}
andersk / openssh.git / blobdiff